Agricultural pulverizing implement.



No. 650,798. Patented May 29, I900.

- S. B. ROBUCK.

AGRICULTURAL PULVERIZING IMPLEMENT.

(Application filed Mar. 27, 1899.)

"MBIJ 3 Sheets-Sheet No. 650,798. Patented May 29, I900.

s. B. ROBUCK, AGRICULTURAL PULVERIZINE, IMPLEMENT.

(Application filed Man, 21 W 2), (No Model.) 3 Sheets-Sheet 2.

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. 1 ofiugW No. 650,798. Patented May 29, I900.

- s. B. BDBUCK.

AGRICULTURAL PULV ERIZING IMPLEMENT.

(Application filed Mar. 27, 1899.)

(No Model.) 3 Sheets-Sheet 3.

5110M box Sam. 5. fiobuc/t. M aHIomMM/ 1 NORRIS PETERS co, Puorouflm. wrsnmr-Tcn. o. c.

. plow and a harrow; and to this end the in- Unrrnn STATES PATE T OFFICE.

SAMUEL ROBUCK, OF STERLING, COLORADO, ASSIGNOR TO JESSE H.

' ROBUOK, OF SAME PLACE.

AGRICULTURAL PULVERIZING IMPLEMENT.

SPECIFICATION forming part of Letters Patent N 0. 650,798, dated May 29, 1900.

Application filed March 27, 1899.-

'To all whom. it may concern.-

Be it known that I, SAMUEL B. ROBUOK, a citizen of the United States of America, residing at Sterling, in the county of Logan and State of Colorado, have invented certain new and useful Improvements in Agricultural Pulverizin g Implements; andI do declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figu res of reference marked tl1ereon,which form a part of this specification.

'My invention relates to an improved agricultural pulverizin g implement, my object being to provide a machine of this class capable of performing the combined functions of a Vention consists of the features, arrangements, and combinations hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure l is a side elevation of my improved machine. Fig. 2 is a vertical longitudinal section taken through the same. Fig. 3 is a plan view of the machine. Figfa is an underneath view of the same. Fig. 5 is a rear sectional View, the section being taken through the parts mounted on the main driv ing-shaft. Fig. 6 is a cross-section taken through the shaft, showing the lever for shifting the clutch sleeve for the purpose of throwing the machine in and out of gear. Fig. 7 is a fragmentary sectional view taken through one of the pulverizing-teeth. Fig. 8 is a fragmentary perspective view illustrating the shank of one of the teeth with the point removed. Fig. 9 is a perspective view of the tooth=point detached.

Similar reference characters indicating corresponding parts in the views, let the numeral 5 designate the framework of the machine, on which is mountedand journaled a main driving-shaft 7 by means of suitable boxes 6, attached to the under side of the frame. To the extremities of this shaft are made fast the large ground --wheels 8. J ournaled in the frame 5, to the rear of the shaft 7 and paral- Serial N0- 710,550. (No model.)

lel therewith, is a' shaft 9, supported on the frame by the boxes 10 and 12. Between one end box 10 and the box 12 this shaft is angular, preferably squarein cross-section. Upon this square portion of the shaft are fitted a number of hubs 13, each having a number of curved teeth let, preferably formed integral therewith. As shown in the drawings, each hub 13 carries a set of teeth. The points 15 of these teeth are detachable, so that they may be removed when worn to permit the substitution of new ones. As shown in the drawings, the point 15 is connected with the shank by means of abolt 15. It may, however, be secured in any other suitable manner, whereby it becomes readily detachable; The two teeth M on opposite sides of the hub 13, taken together, are shaped somewhat like the letter 3'. These teeth turn with their shaft 9 in the direction indicated by the arrow in Figs. 1 and 2. The teeth are operated from the main driving-shaft 7 through the instrumentality of gearing which will now be described.

Loosely mounted on the shaft 7 is a large gear-wheel16, provided with a hub 17, upon which are formed clutch teeth 18, adapted to engage and cooperate with counterpart teeth 19, formed on the adjacent extremity of a sleeve 20. This sleeve rotates with the shaft 7, but is permitted an endwise sliding movement thereon,whereby it may be thrown into and out of engagement with the teeth on the hub of the gear, according as it is necessary to operate the gear or allow it to remain idle. Hence the sleeve is splined on the shaft, as shown at 22. This sleeve is shifted end wise on the shaft in either direction by a hand-lever 23, fulcrumed on the frame, as shown at 24. The lower extremity of this lever is forked to engage a circumferential groove 20 The lever is located in'either adjustable position in the usual manner by means of a rack 25, mounted on the frame,

and a movable locking-rod 26, attached to the lever. The gear 16 meshes with a gear 27, journaled on the frame. The gear 27 meshes with a pinion 28, fast on the shaft 9.

By properly regulating the sizes of the gear 16 and the pinion 28 any desired speed may be imparted to the shaftt) and its pulverizingteeth. The counterpart gear 27 is employed 2 stories for the purpose of giving the forward rotation to the shaft 9 and the teeth mounted thereon. These teeth are covered by a housing 29, fast on the frame and closed on both sides and in front. The housing prevents the teeth from throwing dirt and reduces the possibility of accident while working around the machine to a minimum.

The framework 5 is fulcrumed on the main driving-shaft 7 and may be tilted for the purpose of raising and lowering the pulverizingteeth through the instrumentality of a lever 30, fulcrumed on the tongue 32, as shown at 31. This lever'passes through a slot 33, formed in the tongue, and its lower extremity is provided with a cam 34, adapted to bear upon the platform or frame 5 underneath when the lever is moved in the direction of the arrow in Figs. 1 and 2, whereby the framework in front of the axle or driving-shaft '7 is moved downward and the framework in the rear of the shaft 7 lifted. It is evident that by the proper manipulation of this lever the depth to which the pulverizing-teeth are allowed to enter or penetrate the ground may be regulated at will. The lever 30 is locked in any desired position of adjustment by a springheld locking rod engaging a toothed bracket 36, mounted on the tongue. The cutting depth of the pulverizing-teeth is still fu rther regulated by means of a lever 37, fulcru med on the frame, as shown at- 38, and havin g a fan-shaped lower extremity 37 adapted to engage the surface of the ground. By moving this lever in the direction indicated by the arrow in Fig. l the frame will be tilted upwardly in the rear of the axle and the pulverizing-teeth raised to a corresponding extent. The tongue 32 of the machine is hinged to the framework, as shown at 40, to allow the frame to'turn on the axle 7 as a fulcrum, while the tongue remains stationary and in its normal plane. My improved machine is drawn by horses hitched to the tongue 32.

The driver sits upon the seat 45, which is mounted upon the framework in a convenient position for the manipulation of the levers 23, 35, and 37.

Having thus described my invention, what I claim is-- 1. In a dirt-pulverizer,-the combination with the ground-wheels, and axle arranged to turn with the wheels, of a framework fulcrumed 011 the axle and extending both in front and rear of the same, pulverizing-teeth mounted on the framework in the rear of the axle and arranged to perform their function by revoluble action, a draft tongue or pole hinged to the frame forward of the axle, and a camlever fulcrumed on the tongue and arranged to bear upon the frame, which extends beneath the tongue,-whereby the frame may be tilted on theaxle to regulate the cutting depth of the revoluble pulverizing-teeth.

2. In a dirtrpulverizer, the combination with the ground-wheels and axle arranged to turn with the wheels, of a framework fulerumed on the axle and extending both in front and rear of the same, pulverizing-teeth mounted on the framework in the rear of the axle and arranged to perform their function by revoluble action, a draft tongue or pole hinged to the framework forward of the axle, a camlever fulcrumed on the tongue and arranged to bear upon the frame, which extends beneath the tongue,-where by the frame may be tilted on the axle to regulate the cutting depth of the revolu'ble pulverizing-teeth, and an auxiliary controlling-lever fulcru med on the frame in the rear of the axle, and having a fan-shaped lower extremity arranged to'bear upon the surface of the ground.

In testimony whereof I aflix my signature in presence of two witnesses.

SAMUEL B. ROBU-CK. Witnesses:

A. J. OBRIEN, NELLTE G. DANIELS. 

